I wanted a Colt for years, but there is something about the DD MK18 and the KAC SR15 that has me thinking is there something about them that Colt doesn't have that I missed? I don't know call me crazy. Or a AR noob.
Actually only the KAC would have something over the Colt, since they have dumped some unecessary destructive testings that shortened the life of critical parts of the rifle, changed the design of some parts to prolong their life and add reliability, they have also been working directly with Eugene Stoner for a while developping their weapons.
Basically 90% of the Ar's in Canada can't compare to a basic Colt, since Colt owns the TDP for the M4 Carbine the DD's standard to which they build their rifles is the Colt. The only thing they have better is the CHF barrel. But then you have Colt Canada that makes excellent CHF barrels.
Every AR-15 produced today is built compared to a standard, and that standard is Colt. They OWN the standard. The only other company that makes a Colt standard gun, which basically cut absolutely no corners and have access to the TDP, is BCM. LMT also produces a Colt quality gun, and in some aspects and processes they make a better gun, and in others (that is up for debate, not a single LMT has had trouble with straight pins and unparkerized barrel under the FSB) a less better gun.
FN makes a Colt quality gun but they only produce for the U.S. Military, they are soon to come to the civilian world, but as part of their contract with Colt they will not be allowed to use the TDP or any knowledge they got from using the TDP to produce civilian AR's. We'll see how that turns out.
Then you have the companies that make a rifle that is of a higher standard and of higher quality than Colt, namely KAC, Noveske, HK, maybe LaRue but they told us to pound sand so they can pound sand too.
If someone thinks a piston AR is better than DI because "it runs cleaner", they basically just showed they know nothing about the AR-15 and I wouldn't consider anything they say.